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Anettt [7]
2 years ago
15

PLZZZ HELP pictures down below

Mathematics
1 answer:
balu736 [363]2 years ago
5 0

Answer:

C

Step-by-step explanation:

We can multiply each equation by a constant so they'll equal either 15 or -15 since that is the LCM.

Since the answer choices want us to make the top a negative 15, we'll do that.

2x-5y=-21 \\ \\ 3(2x-5y)=(-21)*3 \\ \\ 6x-15y=-63

To make the y's cancel out, the second equation would have to have the y's coefficient equal 15.

Let's do that.

3x-3y=-18 \\ \\ -5(3x-3y)=(-18)*-5 \\ \\ -15x+15y=90

So the resulting equations are answer choice C.

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I need help immediately, you’ll receive brainlest if answered correctly!!!
tia_tia [17]

Answer: 120

Step-by-step explanation:

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3 years ago
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A rectangle has vertices a(1,2), B(1,7), c(4,7), d(4,2). what is the perimiter of the rectangle
aliina [53]

Answer:

16

Step-by-step explanation:

You see, if you were to plot these points, (1, 2) and (1, 7) would be 5 points away from each other. If you were to plot the points (4, 2) and (4, 7) those points would also be 5 points away from each other. Now, (1, 2) and (4, 2) are 3 points apart as well as (1, 7) and (4, 7). Therefore, 5 + 5 = 10, 3 + 3 = 6, and finally, 10 + 6 = 16!

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3 years ago
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The daytime temperature in Pinedale was 7 1/2 degrees Celsius yesterday. Today the temperature dropped to -3 degrees Celsius. Th
shtirl [24]

Answer:

-10.5 deg

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3 years ago
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Find the directional derivative of f at the given point in the direction indicated by the angle θ.
anygoal [31]

Answer:

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Step-by-step explanation:

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At coordinates (0,1),we now have;

∇f(0, 1) = [-1²•sin0, (cos 0) - 0]

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4 0
2 years ago
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igomit [66]
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3 years ago
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